DanCoulter

Once activated, this plugin will translate every instance of the jQuery UI 
Datepicker plugin on your blog. It even comes with the latest version of 
the jQuery plugin, so that you can add it to pages on your blog.
This will only work with version of the Datepicker plugin that come with 
jQuery UI versions 1.5 or higher.

Datepicker i18n

Globally translate your jQuery UI Datepicker instances.

Danial Hatami

It will turn WordPress , bbPress and BuddyPress into Persian ! and also enables awesome features !
<ul>
<li>
For Upgrading to 3.1 : Delete the plugin and install it again.
</li>
<li>
برای به‌روزرسانی به نگارش ۳.۱ به بالا : نخست افزونه را پاک کنید و دوباره آن‌را نصب کنید .
</li>
</ul>
<a href="http://chamrosh.ir/projects/persian-world" title="Chamrosh Studio" rel="nofollow ugc">توضیحات افزونه به زبان پارسی</a>
<h4>Compatibility</h4>
<ul>
<li>WordPress : 3.9.x</li>
<li>bbPress : 2.5.x</li>
<li>BuddyPress : 2.0.x</li>
</ul>
<h4>Features</h4>
<ul>
<li>It Translates All Part of WordPress , bbPress and BuddyPress and Twentyfourteen ( WordPress 3.8 default theme )</li>
<li>Enables Word Captions (!) </li>
<li>Enables RTL and LTR buttons [TinyMCE editor]</li>
<li>Enables Create Username containing Persian characters [Default WordPress does not allow to use persian characters in usernames]</li>
<li>Enables New Admin Typography</li>
</ul>
<h4>What’s Next?</h4>
Please try the plugin and contact me (<code>persianworld@chamrosh.ir</code>) if you encounter any bugs or have any questions or suggestions !
This plugin is part of <a href="http://chamrosh.ir" title="Chamrosh" rel="nofollow ugc">Chamrosh Studio Projects</a>

Persian World

It will turn WordPress , bbPress and BuddyPress into Persian !

Datepicker i18n vs Persian World